(2)
A00188 Adhesive - BMS 5-105, Type I or II
(3)
B00148 Solvent - Methyl Ethyl Ketone (MEK)
(4)
G00034 Cheesecloth - Lint-free
(5)
G00000 Fabric - Vinyl-coated glass, BMS 8-115, Type I
(6)
G00060 Fabric - Lead-coated, BMS 8-47, Types I, III and IV
(7)
G00086 Insulation - Blanket, Thermal Acoustical Fiber, BMS 8-48, Type III, Class 3
(8)
G00087 Insulation - Covering, BMS 8-142, Type I
(9)
G00158 Thread - Cotton, V-T-276, Type IB3, Ticket No. 16
(10)
G01996 Tape - Repair, OT-5
C. References
(1) AMM 25-21-39/401, Sidewall and Ceiling Insulation
D. Access
(1) Location Zone
200 Upper Half of the Fuselage
E. Repair Blankets or Covers
S 348-039
WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR
_______ SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(1)
Clean the damaged area with cheescloth soaked with MEK or acetone.
S 348-040
(2)
Cut a piece of fabric that is the same as the damaged blanket or cover.
NOTE: The fabric must be one inch larger in all directions than
____ the damaged area. Make the corners of the patch round.
If the damage is more than 25 percent of the blanket or cover size, do the procedure given to replace a blanket with too much damage.
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A 737-300/400/500MAINTENANCE MANUAL
S 348-041
(3) Apply adhesive or cement to the damaged area and the patch.
NOTE: For blanket or cap strip assemblies, you can use a patch
____
of OT-5 tape, in an alternative repair.
S 348-169
(4)
Push the patch into the damaged area tighly to make sure there is a satisfactory bond.
S 348-043
(5)
Apply adhesive to velcro tapes if it is necessary to bond them to the blankets or covers.
F. Replace Insulation Blankets with Too Much Damage
NOTE: Use this procedure if the repair area is more than 25 percent
____
of the size of the blanket or cover.
S 028-044
(1)
Remove the damaged sidewall or ceiling blanket (Ref 25-21-39/401).
S 348-045
(2)
Make a new blanket with the steps that follow:
(a) Use the damaged blanket to make a paper template.
NOTE: Use the same quantity and thickness of layers for
____ the new blanket as there were in the damaged blanket.
(b)
Cut fiberglass insulation to the same shape as the template.
(c)
Put the layers of the fiberglass insulation between the inboard and outboard sides of the fabric covering.
(d)
Put a sheet of lead-coated fabric between the layers of the blanket if it is necessary.
NOTE: The lead-coated fabric must have 0.25-inch diameter
____ holes. If the insulation blanket width is less than 12 inches,there must be one hole for each 10-inch length of the blanket. If the blanket width is more than 12 inches, there must be two holes for each 10-inch length of the blanket.
(e) Cut the fabric covering and lead-coated fabric, if it is necessary.
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A
737-300/400/500MAINTENANCE MANUAL
(f) Use a staple to connect the layers of the blanket to easily stitch and handle the blanket.
NOTE: The staples must be between the stitches and the
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